Home / 220,981.31-331,450.38-71,329.01

Finding the Fourth Proportional to 220,981.31, 331,450.38 and 71,329.01

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Solution

The fourth proportional to 220,981.31, 331,450.38 and 71,329.01 is: 106,986.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,981.31 : 331,450.38 = 71,329.01 : x
  2. Step 2: Convert to fraction form
    220,981.31/331,450.38 = 71,329.01/x
  3. Step 3: Cross multiply
    220,981.31x = 331,450.38 × 71,329.01
  4. Step 4: Simplify right side
    220,981.31x = 23,642,025,812.27
  5. Step 5: Solve for x
    x = 23,642,025,812.27/220,981.31
  6. Step 6: Final answer
    x = 106,986.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.